Heat distributor plate for cook stoves



June 16, 1931. F. v. DETWILER HEAT DISTRIBUTOR PLATE FORCOOK STOVESFiled Sept. 30, 1929 2 Sheets-Sheet l lllll 4.

June 16, 1931. F. v. nr-:TwlLr-:R 1,810,132

HEAT DISTRIBUTOR PLATE FOR COOK STOVES Filed Sept. 30. 1929- 2Sheets-Sheet 2 Patented June 16, 1931 eric FOREST V. DETWILER, OF GRANDRAPIDS, MC-LIG-AN HEAT nisrninnrcn rnnrnroa ccoizsrovns Applicationfiled September 30, 1929. Serial 110,396,099.

This invention relates to improvements in heat distributor plates,particularly adaptedV though not necessarily llimited. in use with cookstoves, and one of the objects of the invention is to provide animproved plate of this character so constructed that the products ofcombustion or heat from the heating medium, whether vapor or electric,will be directed to and confined against substantially the entire areaof the bottom of the cooking vessel or container which is placedthereupon, rand at the same time prevent the loss of the benefit of theheat units through the escape thereof beyond the circumference ofthe'pot or receptacle. y

A further object isto provide in a plate of this character improvedmeans for indue'- ing circulation of the heat4 units between the plateand the bottom of the pot or receptacle resting thereupon.

A further object is'to .provide an improved plate of this characterhaving means for comer pensating vessels of varying si'zes'anddiameters.

To the attainment'of these ends and the accomplishment of other'newandvuseful objects as will appear, the invention vconsists in thefeatures of noveltyjin substantially the construction, combination andarrangement described and claimed and shown inthe accompanying drawingsillustrating'this in-v Figure3 is a View similar to Figure 1 of amodified form of plate. Y

Figure 4 isla vertical sectional view 'of the top of a cook stovevhaving plates of" this character constructed in accordance with' theprinciples of this invention associated'therewith.

vFigure 5 is a view similar to Figure 1 of a modified form of theinvention and showing of the several parts hereinafter more fully Figure2 is a top planviewofthe plate.Y

the lsame adapted for use in connection with an electric heatingelement. f Figure 6 is a view taken on line 6%61Figure 5, with partsomittedy and with parts broken away.

Referring more particularly to the drawings and to the form of theinvention shown in Figures 1 and 2, the numeral 10 designates generallythe top of a cook stove having an opening 11 therein, through which theheat or products of combustion from the burner 12 are directed.

The heat distributor plate in this form 'of the invention is of anannular construction having an opening 13 at the centerrthereof adaptedto be arranged in register with the opening 11 in the top of the stove.The body portion 14 of thevplate inclines upwardly from the opening 13toward the periphery of the plate and merges into'a flanged' portion 15whichdepends below the body portion and also projects fora shortdistance thereabove as at 16. f Y

Encompassing the opening 13-'is a depending flange 17 and the base ofthe flange k17 preferably though not necessarily, terminates in the sameplane as the base of the flange 15.*`

' The flange17'y alsoprojects for a short distance above the top k'ofthe body portion 14 as at 18.

The flanges 15 and 17 form the support forl the plate to rest upon thetop of the stove 10 and the opening 13 at the center of the plate is ofa diameter somewhat larger than the diameter of the burnery or heatingmedi-'Av um .12. j

Projecting above the upper surface ofthe body portion 14 andintermediate the flanges in staggered relation with respect to eachl`other so 4that when the receptacle 2L such as a pan, pot or the like isplaced upon the inc plate the products of combustion or heat from theheating element l2 which enters the opening 13 will be directed againstthe bottom of the cooking receptacle 21 and the openings 2() will permitthe products of combustion to pass across the bottom of the receptacleand will be caused to circulate lby reason of the staggered. relation ofthe openings 20.

By providing an inclined body portion 14 it will be manifest that theplate will compensate varying sizes or diameters of cooking vesselsplaced thereupon and at the same time the projections 19 with theopenings 2U therethrough will insure a circulation of the products ofcombustion against and across the bottom of the cooking utensil. At thesame time the products of combustion will be directed throughoutsubstantially the entire area of the bottom of the utensil and the heatunits will not be lost by the escape of the heat units beyond theperiphery of the cooking utensil, until after they have circulatedacross the bottom thereof, thereby utilizing all of the heat units.

In the form of the invention shown in Figure 3, the body portion 22 ofthe plate is substantially horizontal and is provided with an opening 23at the center thereof. A flange 24 encompasses the opening 23 anddepends below7 the body portion 22 and also above the upper surfaceofthe body portion as at 25.

A peripheral flange 2G encompasses the plate and depends therebelow, thelower edge thereof terminating in the same plane as the lower edge ofthe flange 24. A portion of the flange 26 projects above the top of thebody portion 22 as at 27, similar to the flange 25.

Intermediate the flanges 25 and 27 are ribs or projections 28 whichextend circumferentially about the body 22 and are spaced from eachother. These flanges 25-27 and the projections 28 may be provided withopenings 29 and extending through the top thereof so as to permit t-heproducts of combustion to circulate across the bottom of the cookingutensil 30. c

The body portion 22 may be provided with openings 81 extendingtherethrough and intermediate the adjacent flanges and projections25-27, 28, so that when the dist-ributor plate is placed upon the top ofthe stove the products of combustion from the heating element will becirculated against the bottom of the cooking utensil. At the same timeair will enter the openings 31 from beneath the plate and will operateto induce the circulation of the products of combustion across thebottom of the cooking utensil.

As shown in Figure 4, there is illustrated the top of a stove designatedgenerally by the reference numeral 32, which is removably supported inposition in a manner similar to the tops or grills now on all gasstoves. In the form of the invention shown, the top 32 is prov-ided withopenings 33 having supporting flanges 34 encompassing the openings. Oneof the plates 14 is placed in each of the openings 33 and the flanges 34are so arranged that the upper edge of the flange 16 of the plate willproject only a short distance above the stove top 32.

If desired and as a means for providing for safety or to permit theescape of any excess heat which may accumulate under the top 32,openings 35 may be provided through the top 32 for that purpose andthese openings are 'preferably arranged along the edge of the top.

As shown in Figures 5 and 6, the invent-ion is adapted for use with anelectric heating element 36. In this form of the invention a flange 37encompasses the central opening 38. This flange depends below the bodyportion 89, the latter inclining upwardly towards the periphery thereofand the circumferential flange 40 depends below the periphery of thebody portion, the lower edges of the flanges 40 and 37 preferablyterminating in the same plane.

The heating element 36 is supported in the stove top 41 in any suitablemanner well known in this art and proj-ects for a slight distance abovethe top 41 of the stove, so that when the plate 39 is placed in positionthe heating element will extend into the opening 36.

The body portion of the plate'39 is imperforate and is preferablyprovided with a circumferential groove 42 opening through the upper facethereof and adjacent the periphery for the reception of the lower edge43 of a cover 44 that is adapted to be removably placed thereupon.

If desired a supplemental heat distributing plate 45V may be used inconnection with the plate 39, but the specific construction of the plate45 constitutes no part of the present invention, suffice it to say thatthe plate 45 may be supported by suitable legs 46 adapted to rest uponthe surface of the plate 39.

The heating element is controlled by means of a suitable switch orcontrolling device 48.

In either form of the invention it will be manifest that when a cookingutensil is placed upon the top of the plate, the heating units will beconfined againstthe bottom of the utensil and will be circulatedthereover and the loss of the heat units by escaping beyond theperiphery of the cooking utensil before they contact with the bottom ofthe cooking utensil will be reduced to a minimum.

The heat distributor plate may be constructed of any desired size andconfiguration and of any suitable material, and while in the presentforms of the invention the same is shown as being formed of castmaterial, it is to be understood that they may be formed of sheetmaterial stamped into shape.

The plates are adapted for use with any form of stove and may be readilyremoved l., when not desired.

In the form of the invention shown in Figure 4, the grilles now formingthe top of gas stoves which extend kover the burners, may be removed andthe top 32 placed in position so that the heating plates may be used inconnection Y with the openings 33 therethrough.

While the preferred forms of the invention have been herein shown anddescribed, it is to be understood that various changes may be made inthe details of construction and in the combination and arrangement ofthe severaly parts, within the scope of the claims, without departingfrom the spirit of this invention.

What is claimed as new is l. A heat distributor plate for cookingpurposes, said plate having an opening of considerable size therethroughat the center thereof, a downwardly projecting imperforate flangeencompassing said opening, and a downwardly projecting imperforateflange encompassing the periphery of the plate, the lower edges of saidflanges being in substantially the same plane.

2. A heat distributor plate for cooking purposes, said plate having anopening of considerable size therethrough atl the center thereof, adownwardly projecting imperforate flange encompassing said opening, a

downwardly projecting imperforate flange encompassing the periphery ofthe plate, the lower edges of said flanges being in substantially thesame plane, and raised ribs projecting above the top surface of theplate.

3. A heat distributor plate for cooking purposes, said plate having anopening of considerable size therethrough at the center thereof, adownwardly projecting flange encompassing said opening, a downwardlyprojecting flange encompassing the periphery of the plate, the loweredges of said flanges being in substantially the same plane, and raisedannular ribs projecting above the top surface of the plate, there beingopenings through the ribs, said openings being arranged in staggeredrelation.

4. A heat distributor plate for cooking purposes, said plate `having anopening of substantial size therethrough at the Center thereof, adownwardly projecting substantially vertical flange encompassing saidopening whereby substantially all of the heat units from a burnerbeneath said opening will be directed across the top` surface of theplate, and a downwardly projecting flange encompassing the periphery ofthe plate, the lower edges of said flanges being in substantially thesaine plane, the body port tion of the plate inclining upwardly fromsaid opening towardslthe periphery ofv the plate.

5. An annular heat cooking purposes, and `spaced. downwardly project-ingflanges encompassing the inner and outerperipheries of the plate, theinner flange being substantially vertical'whereby substantially all ofthe heat units will pass over the top surface of the plate, the saidplate inclining upwardly from the inner to the outer periphery thereof.

v6. An annular heat distributorplate forcooking purposes, spaceddownwardly project-ing flanges encompassing the inner and outerperipheries of the plate, and upwardly 5 downwardly projecting flangesencompassing y the inner and outer peripheries of the plate, andupwardly projecting annular ribs extending above the upper face of theplate', there being openings through the plate intermediate said ribs 9.As an integral structure, an annular heat distributing plate for cookingpurposes, spaced downwardly projecting k'flanges encompassing the innerand outer periphery of the plate,thel said plate inclining upwardlyfrom, the inner to the `outer circumference thereof, and-a groove orrecess adjacentthe outer' periphery of the plateopening through the topthereof and extending therearound.

10. As an integral structure, an annular heat distributing plate forcooking purposes, spaced downwardly projecting flanges yencompassing theinner and outer periphery of the plate, and spaced concentricallyarranged upwardly projecting ribs extending above the top of the plate.

11. A n annular heat distributing plate for cookingpurposes, spaceddownwardly projecting flanges encompassing the innerl and outerperiphery of the plate, and spaced concentrically arranged upwardlyprojecting ribs extending above the top of the plate,

,distributor plate for there being openings transversely through theribs arranged in staggered relation.

l2. An annular heat distributing plate for cooking purposes, spaceddownwardly project-ing flanges encompassing the inner and outerperiphery of the plate, and spaced concentrically arranged upwardlyprojecting ribs extending above the top of the plate, there beingopenings transversely through the ribs arranged in staggered relation,there being openings through the body of the plate intermediate saidribs.

13. An annular heat distributing plate for cooking purposes, spaceddownwardly pron jecting flanges encompassing the inner and outerperiphey of the plate, and spacedconcentrically arranged upwardlyprojecting ribs extending above the top of the plate, in combinationWith a stove top having a burner opening therethrough and into whichopening said plate is adapted to be inserted, and means for supportingthe plate in the said opening.

14. A heat distributor plate for cooking purposes having an opening ofsubstantial size therethrough, a downwardly projecting flangeencompassing the said opening, and spaced concentrically arrangedprojections extending above the top of the plate, in combination with astove top having a burner opening therethrough and in which last saidopening the plate is arranged, the said flange serving to directsubstantially all of the products of combustion from the burner beneathsaid opening, to iow across the top of the plate.

15. A heat distributor plate for cooking purposes having -an opening ofsubstantial size therethrough, a downwardly projecting fiangeencompassing the said opening, and spaced concentrically arrangedprojections extending above the top of the plate, in combination with astove top having a burner opening therethrough and in which last saidopening the plate is arranged, the said flange serving to directsubstantially all of the products of combustion from the burner beneathsaid opening, to flow across the top of the plate, the body of saidplate inclining up- 1 Wardly from saidk opening.

In testimony whereof I have signed my name to this specification, onthis 21st day of September, A. 11.1929.

FOREST V. DETWILER.

